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Police Bureau

Sworn to protect. Dedicated to serve.

Phone: 503-823-0000

Fax: 503-823-0342

Non-Emergency: 503-823-3333

1111 S.W. 2nd Avenue, Portland, OR 97204

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Case #91-57365

Li Yang Yuan, a 29-year-old woman from China, was here on a visitor’s visa with her husband living in Portland. On the evening of July 3, 1991, her husband came home to their studio apartment at the Jefferson Plaza at 1515 SW Jefferson Street to find her deceased. An autopsy concluded that Li Yang had died as the result of strangulation.

It was reported that Ms. Yuan had been romantically involved with others outside of her marriage. Li Yang was last seen leaving the apartment building that morning.

Li Yang was employed at The Mandarin Cove Chinese restaurant on SW Columbia Street as well as a Chinese herb shop on 82nd Avenue. In China, Li Yang taught English classes at a university in China.

The Cold Case Unit would like anyone with information regarding this case to contact them. Witnesses may contact Cold Case Homicide Unit investigators directly at (503) 823-0400. To remain anonymous, witnesses may provide information through Crime Stoppers of Oregon.

Crime Stoppers is offering a cash reward of up to $1,000 for information, reported to Crime Stoppers, that leads to an arrest in this case, or any unsolved felony, and tipsters can remain anonymous.

Information learned from social media sites such as Facebook, Twitter or YouTube should be shared with investigators as these tips may lead to the identification of a suspect or suspects. Links can be shared directly with investigators or anonymously through Crime Stoppers.

Leave a Crime Stoppers tip online at text CRIMES (274637) and in the subject line put 823HELP, followed by the tip, or call (503) 823-HELP (4357) and leave the tip information. Tips can be left in English or Spanish.

Visit to download the Crime Stoppers App for the iPhone or Droid.